155046640551 has 16 divisors (see below), whose sum is σ = 225550459008. Its totient is φ = 93955964000.

The previous prime is 155046640543. The next prime is 155046640577.

155046640551 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 155046640551 - 2³ = 155046640543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155046640531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19500 + ... + 557201.

It is an arithmetic number, because the mean of its divisors is an integer number (14096903688).

Almost surely, 2^155046640551 is an apocalyptic number.

155046640551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155046640551 is a deficient number, since it is larger than the sum of its proper divisors (70503818457).

155046640551 is a wasteful number, since it uses less digits than its factorization.

155046640551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584862.

The product of its (nonzero) digits is 360000, while the sum is 42.

It can be divided in two parts, 155046 and 640551, that added together give a palindrome (795597).

The spelling of 155046640551 in words is "one hundred fifty-five billion, forty-six million, six hundred forty thousand, five hundred fifty-one".